4" Zone Lift Kit | 2019-2024 GMC AT4 1500 & Chevy Trailboss 1500 | Fox Adverture Series

🛠 Zone Offroad 4" Suspension Lift Kit

Fits 2019–2024 Chevy Trail Boss & GMC AT4 1500 (Gas & Diesel Models)
Engineered for Adventure. Built for Confidence.

Lifted Look. Unmatched Performance.

Take your Chevy Trail Boss or GMC AT4 to a whole new level with Zone Offroad’s 4" Suspension Lift Kit—designed specifically for factory-lifted models. Because these trucks already sit 2" higher than standard models, this kit delivers a final stance equivalent to 6” of lift on a standard 1500, making it ideal for fitting up to 37" tires with aggressive off-road capability and improved on-road manners.

📦 What’s Included:

• Heavy-duty 1/4" laser-cut crossmembers for unmatched strength

• Adventure Series Upper Control Arms for durability and improved down travel

• Top-mounted front strut spacers retain factory ride quality

• CNC-machined ductile iron steering knuckles for strength and ESC compatibility

• Differential relocation brackets to maintain driveline geometry

• Heavy-duty skid plates for off-road protection

• Rear lift blocks and extended u-bolts

• Complete hardware and instructions

💪 Features & Benefits:

• Maintains on-road handling while improving off-road performance

• Crossmembers and skid plate offer structural integrity and protection

• Steering knuckles designed for ESC system compatibility

• Factory struts remain intact—no disassembly required

• Adventure Series UCAs offer correct geometry and extended durability

• Fits 35–37” tires depending on wheel configuration

• Compatible with Gas and Diesel models

• Backed by Zone’s Factory Protection Plus

🚫 Fitment Notes:

• ❌ Will not fit models equipped with Adaptive Ride Control (ARC)

• ❌ Factory 17" and 18" wheels cannot be reinstalled due to tie rod interference

• ✅ Stock 20" wheels can be reused

• ⚠️ Requires frame bracket modification

• ⚠️ Some wheels may not clear factory brake calipers—always test fit before mounting tires

• ⚠️ 2022+ Super Cruise models have not been validated for fitment

🛞 Tire & Wheel Fitment Guide:

Chevy Trail Boss

• 33 x 12.5 on 17x8 or 17x9 w/ 4.5" BS

• 33 x 12.5 on 20x9 or 22x9 w/ 4.5–6.25" BS

• 35 x 12.5 on 20x9 or 22x9 w/ 5.5–6.25" BS

• 37 x 12.5 on 20x9 or 22x9 w/ 5.5" BS

GMC AT4

• 295/65 on 17x8 or 17x9 w/ 4.5" BS

• 295/60 on 20x9 w/ 4.5–6.25" BS

• 35 x 12.5 on 20x9 or 22x9 w/ 5.5–6.25" BS

💥 Rear Shock Options:

Nitro Series Gas Shocks

• Twin-tube nitrogen-charged design

• Velocity-sensitive valving (10-stage)

• Dual-welded ends for durability

• Self-lubricating seals

• Black powder-coated finish

FOX 2.0 Adventure Series

• 2" steel body with silver corrosion-resistant coating

• IFP (Internal Floating Piston) monotube for fade-free performance

• 5/8" hard chrome-plated alloy shaft

• Race-developed high-flow piston

• Application-specific tuning

Give your Trail Boss or AT4 the lift it was built for—maximum clearance, bold stance, and off-road domination. Zone Offroad’s 4” lift brings the balance of durability, comfort, and capability your GM truck deserves.